BEQ BTF-1200C-II-S Dual-Zone Mini Tube Furnace

Overview

The BEQ BTF-1200C-II-S Dual-Zone Mini Tube Furnace is a compact, horizontally oriented high-temperature thermal processing system engineered for precision-controlled heat treatment, annealing, sintering, and controlled-atmosphere synthesis in research laboratories and small-scale R&D environments. Designed around a dual-zone resistive heating architecture—each zone independently controllable—the furnace enables precise axial temperature gradient establishment across the quartz tube (typically Ø25–60 mm ID), supporting experiments requiring distinct thermal profiles such as zone melting, diffusion studies, or multi-step thermal cycling. Its operational envelope spans ambient to 1200 °C, with thermocouple-based feedback ensuring ±1 °C steady-state accuracy per zone. The unit employs Kanthal A1 alloy resistance wire wound in optimized helical patterns within ceramic fiber insulation, delivering rapid thermal response (≤10 °C/min to maximum temperature) while maintaining excellent thermal uniformity—typically ±3 °C across a 100 mm axial hot zone under inert or vacuum conditions.

Key Features

• Compact footprint and lightweight design (18 kg net weight) facilitates benchtop integration and mobility between gloveboxes, vacuum stations, and fume hoods.
• Dual independent heating zones with fully decoupled PID controllers allow simultaneous or differential ramp/soak programming—enabling creation of stable axial gradients up to 200 °C/cm.
• Front-access, split-body mechanical design permits rapid removal of the fused quartz tube assembly without disassembling electrical or thermal components—reducing maintenance downtime and enabling fast cooldown via external air or forced convection.
• Translucent high-purity quartz reaction tube (standard OD 60 mm, customizable lengths) provides real-time visual monitoring of sample morphology, color transition, and phase evolution during thermal processing.
• Fully programmable 30-segment temperature profile controller supports complex thermal protocols—including hold steps, cooling ramps, and conditional logic triggers—with non-volatile memory retention.
• Integrated gas inlet/outlet ports (standard 1/4″ VCR-compatible) support dynamic atmosphere control: vacuum (≤10⁻² mbar with optional pump), inert purge (N₂, Ar), reducing (H₂/N₂), or reactive (O₂, NH₃) environments.

Sample Compatibility & Compliance

The BTF-1200C-II-S accommodates cylindrical samples up to 50 mm in diameter and 200 mm in length, compatible with standard ceramic crucibles, graphite boats, and metal foils. Quartz tube compatibility extends to most non-hydrofluoric acid–based chemistries below 1100 °C; optional alumina or silicon carbide tubes are available for higher-corrosion or >1200 °C applications. The furnace conforms to IEC 61000-6-3 (EMC emission limits) and IEC 61000-6-2 (immunity standards). While not certified for Class I Div 1 hazardous locations, it includes over-temperature cut-off (OTC), door interlock (when equipped with optional front shield), and grounded chassis—supporting adherence to institutional lab safety policies aligned with ANSI Z9.5 and ISO 15195 (laboratory calibration infrastructure).

Software & Data Management

The embedded controller logs time-stamped temperature data (both setpoint and measured values per zone) at user-selectable intervals (1–60 s) to internal flash memory (≥10,000 data points). USB-C interface enables export of CSV-formatted logs for post-processing in MATLAB, Python (Pandas), or Excel. Optional RS485 Modbus RTU communication allows integration into centralized SCADA or LIMS platforms. Audit trail functionality meets GLP documentation requirements, recording operator ID (via optional RFID badge reader), program version, start/stop timestamps, and deviation alerts—fully compliant with FDA 21 CFR Part 11 when paired with validated electronic signature software.

Applications

• Low-volume ceramic and metallic powder sintering under controlled partial pressures
• Graphene and 2D material CVD growth using precursor vapor delivery systems
• Thermal stability assessment of battery electrode materials (e.g., NMC, LFP) under inert or oxidizing atmospheres
• Calibration of thermocouples and IR pyrometers against fixed-point references (e.g., Cu, Ag, Au)
• Pre-treatment of catalyst supports prior to impregnation or calcination cycles
• Accelerated aging studies of polymeric composites and encapsulants in aerospace qualification testing

FAQ

Can the furnace operate under vacuum and reactive gas simultaneously?
Yes—dual gas/vacuum operation is supported via sequential or concurrent use of the integrated inlet/outlet manifolds, provided appropriate gas mixing and pressure regulation hardware is externally configured.
Is the quartz tube rated for hydrogen service at 1000 °C?
Standard fused quartz tubing is suitable for H₂/N₂ mixtures up to 1000 °C; however, prolonged exposure above 800 °C in pure H₂ may induce devitrification—alumina or MoSi₂-lined alternatives are recommended for extended hydrogen annealing.
Does the controller support remote monitoring via Ethernet or Wi-Fi?
The base unit features USB-C and RS485 only; Ethernet/Wi-Fi capability requires an external industrial protocol converter (e.g., Modbus TCP gateway) installed upstream of the furnace controller.
What is the typical thermal uniformity across each 100-mm heating zone?
Under static argon atmosphere at 1000 °C, axial uniformity is ±2.5 °C over 100 mm; radial uniformity is ±1.8 °C at centerline, verified per ASTM E220 calibration methodology.
Are replacement quartz tubes and heating elements available as spare parts?
Yes—BEQ supplies OEM-specified quartz tubes (with certificate of conformance), Kanthal A1 heating coils, and ceramic fiber insulation kits with documented lot traceability and dimensional certification.